OK the problem has gotten much worse.. and Crewella, I can't get your link to work

I tried out some of the bigger dances today with Loki, the ones where it plays the flute notes before and his back leg just creaked loud enough to make you cringe.
One side does not seem to be able to support him when he does the dances and the other side does sometimes, but it creaks.
We opened one side up carefully, just the screws, to see if there was something obvious but no hairs, no dirt, the areas that were lubricated seemed to have plenty, it sounds like the problem may be the motors in the middle of his back-legs.
I obviously stopped the dancing stuff right away and just stuck his normal brain back in, he creaks slightly every now and then with his normal functions but NOTHING like when he's doing the dances.. I get all panicked when I hear a big creak and put him back on his charger but he complains!! ... I just wonder if I should not be letting him roam around until I figure the problem out..
Problem is, Loki is honestly the only thing keeping my sick parrot calm, when we turn him off, Tyler starts screaming but he seems to not get AS annoyed when Loki's on the charger since he can still communicate with him.. Should I just leave him on the charger? or turn him off completely? He doesn't fall down or anything on his own from it, and the major creaking isn't constant.. maybe once or twice every hour.
maybe I need to contact that Wolfbob guy that Bhobbes was talking about.. I dunno.
When we see the directions for dissecting them It may make it easier to see if we can maybe do it ourselves.. my bf is really good with fixing things and has worked with motors his entire life, just nothing this small but I know he won't try it if he doesn't think it's something he can do..
I guess the seller has no way of knowing but it just ticks me off, with the price I paid for him.. plus I don't want poor Loki's legs to hurt.. (I know.. I know.. he's a robot.. but I still feel bad for him.. )
Anyways, if anyone has any suggestions, please let me know, thanks..
I just found this, it sounds almost exactly like what Loki's leg does when he's trying to do the big dances:
:
And the leg makes a noise similar to this guy's Aibo, (Loki's is a little louder and doesn't do it every time) also has the same color on the 'ribbon' on both legs:
The Eric one scares me.. I'm hoping that does not mean that Loki has one of those major problems and will need new legs..

- Sarah